Blends of polyphenylene ethers with phosphorus-containing polymers

Claim 1

A resinous composition obtained by preparing a blend comprising a major proportion of (A) at least one polyphenylene ether selected from the group consisting of: (1) those comprising structural units having the formula ##STR1## wherein each Q 1 and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl wherein at least two carbon atoms separate the halogen atom from the benzene ring, hydrocarbonoxy, or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and (2) graft copolymers thereof; or a blend thereof with at least one polystyrene, and minor proportions of (B) at least one hydrocarbon polymer characterized by the presence within its molecular structure of 0.4-1.8% by weight of phosphorus as groups having the formula ##STR2## wherein X 1 is oxygen or sulfur; R 1 is lower alkyl or X 2 R 3 ; X 2 is O, S or NR 4 ; each of R 2 and R 3 is independently H, one equivalent of a metal or ammonium cation, lower alkyl, halo-substituted lower alkyl or silyl; and R 4 is hydrogen or lower alkyl; and (C) at least one fatty acid salt.